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D Question 1 10 pts What are the main roles of management accounting? Question 2 10 pts Describe variable costs and fixed costs. Explain why the distinction between variable and fixed costs is important in management accounting. D Question 3 10 pts Singh Manufacturing uses departmental cost driver rates to apply manufacturing overhead costs to products. Manufacturing overhead costs are applied based on machine hours in the Machining Department and based on direct labor dollars in the Assembly Department. At the beginning of the year, the following estimates were provided for the upcoming year. Machining Assembly Direct labor hours 20,000 40.000 Machine hours 40,000 20,000 Direct labor cost $400 090 $920,000 Manufacturing Overhead costs $440.000 $460.000 The accounting records of the company show the following data for Product #A273: Machining Assembly Direct labor hours 50 100 Machine hours 200 50 Direct material cost $2.100 $1.200 Direct labor cost $1,000 $2.300 Required: 1. Compute the predetermined manufacturing overhead cost driver rate for each department. 2. Compute the total cost of Product #A273